This strategy game is a twist on the classic ‘Dots and Boxes’ but with no restrictions on the number of sides of the shape. Players take turns and the challenge is to try and enclose the greatest area possible. This resource is suitable for Key Stage 3.

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This Science upd8 activity draws on clinical trials. Eight young volunteers had been in clinical trials before, but this time things went horribly wrong. Six of the eight were left fighting for their lives. In this discussion activity students consider whether new treatments should be ever tested on human...

These three activities, from Centre of the Cell, demonstrate how double blind trials are run, explaining what a placebo is and how the placebo effect works, how bias is removed as far as possible and how participants and trial medicines are randomised. Through these activities, students investigate the placebo...

This activity, for two players, is based upon the game of boxes. Students are presented with a partially completed game, with double brackets to expand correctly in order to gain extra edges. Solutions are at the bottom of the page for a player's opponent to check the validity of the solution. A correct answer...

The Double Crossed project was developed by the Centre for Science Education and supported by the Astra Zeneca Teaching Trust as a collaboration between science and history teachers to produce cross-curricular resources.

The project aim was to make science learning more accessible, effective and enjoyable by...

Developed by the Centre for Science Education and supported by the Astra Zeneca Teaching Trust, the Double and Triple Crossed projects aimed to bring science and history together to increase engagement in science through topic based, contextualised learning.

The project enabled thirteen science and history...

Like the Deflection tube investigation this allows A-level students to measure the specific charge for an electron. It provides a step-by-step guide, along with the calculations that are required to find this measurement.

This resource has been provided by Keith Gibbs.

A series of images representing double helix images.

• DNA double helix and sequencing output: molecular model of a DNA double helix showing the individual atoms (apart from hydrogen) as coloured balls. Carbon atoms are in white, oxygen in red, phosporus in purple and nitrogen in blue....

Act 1

A video shows two pairs of sunglasses, each with 50%...

This kit and their associated resources are designed to help teach about double-slit and diffraction patterns.

Before teaching this, students should:

• be familiar with constructive and destructive interference;
• be aware that we get diffraction when a wave travels through a gap;
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Produced by Science & Plants for Schools (SAPS), the investigations suggested in this resource use duckweeds. These seem to be simple plants - small, green, and with no flowers. However, this simplicity makes them ideal experimental organisms for investigations into...

A Catalyst article about Charles Darwin's home and in particular his study which is open to the public. Visiting information is included in the article which puts into context the importance of this room in his work.

This article is from Catalyst: GCSE Science Review 2007, Volume 17, Issue 3.

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This Catalyst article looks at how people lived in the past, archaeologists look at the items (artefacts) these cultures left behind. Using chemical analysis of residues in the artefacts an enormous amount of additional information can be gleaned. This article investigates early dairy farming. Analysis of tiny...

From the Microbiology Society, this resource contains information about biofilms. These are communities of microbial cells attached to a surface. For example, the slime lining plugholes and drains or the rough deposit that can coat teeth at the end of the day. The information clearly describes: * What are biofilms...